WORKBOATS
1992
Outstanding Workboats of 1992
Vessel/Type Main Engines Builder
Recovery l/oil skimmer Caterpiller SEA-FAB, Inc.
M/V Loop Responder/tractor tug Caterpillar North American Shipbuilding
Comandante Cianciulli/fire boat Detroit Diesel Trinity Marine Group
Burrard Cleaner No. 9/oil skimmer Caterpillar MARCO Seattle
Elizabeth Dewey/towboat Caterpillar Avondale Industries
John P. Devaney/fire boat GM Textron Marine
Ashley Alyse McCall/crew boat Cummins Gulf Craft
Michael Luhr/towboat EMD Jeffboat
Al Mutaheda 1/shrimper Caterpillar Bender Shipbuilding
Puget Sound fire boat Kodiak Workboats Northwest
Miss Cynthia/pushboat Detroit Diesel Leevac Shipyards
SIS pilot boat Detroit Diesel Gladding-Hearn
Dauntless/patrol boat Caterpillar SeaArk
provide escort and emergency re-
sponse to VLCC and ULCC tankers
calling at the Louisiana Offshore
Oil Port (LOOP) facility, the Loop
Responder can achieve speeds of 14.5
knots and has demonstrated the
capability to stop in less than its
own length from full speed.
The Loop Responder measures
155 feet long, has a 51.5-foot breadth,
with a displacement of approxi-
mately 1,670 long tons. The Voith
Schneider propellers are directly
driven by a 3,600 hp (2,650 kW) type
3608 Caterpillar diesel engine run-
ning at 1,000 rpm, through hydrau-
lic and gear couplings. The tug can
generate approximately 80 tons of
bollard pull in the dynamic mode
and up to 200 tons of bollard pull in
the indirect towing mode, unique to
Voith Schneider tractor tugs and
necessary for escort vessel work.
Electrical power is provided by
two 150 kW Detroit Diesel gensets
and a Detroit Diesel unit provides
hydraulic power. The towing winch
is a Markey type DUSS-71 single
drum hawser winch, designed to
achieve braking capacity of 500,000
lbs. and a line retrieval of 200 feet/
minute. The towing hawser sup-
plied by Whitehill Manufacturing,
Inc., is 1,000 feet of .75-inch diam-
eter Spectra fiber synthetic hawser
specially designed for high tensile,
positive buoyancy and light weight.
The vessel has two Nijhuis, split
case horizontal water pumps of 1,000
hp driven off the front end of each
main engine, stores 5,000 gallons of
liquid firefighting foam onboard and
has a Skum model PI-100 around
the pump proportioning system and
two Skum model MK-250EX/VR-
250-DELF water monitors with a
range of 425 feet at 170 psi deliver-
ing 7,500 gpm.
The Loop Responder also carries
3,000 feet of 48-inch oil spill con-
tainment boom on two separate hy-
draulic powered reels, has in-hull
storage capacity and a separate
pump room to handle 3,000 barrels
Ashley Alyse McCall crewboat from Gulf Craft
Jamaican patrol boat from SeaArk
Pushboat Michael Luhr from Jeffboat
SES fireboat John P. Devaney from Textron Elizabeth Dewey from Avondale Industries
November, 1992 27
Digital Wave Publishing